CN105025095A - Cluster framework capable of realizing cloud computing flexible service - Google Patents
Cluster framework capable of realizing cloud computing flexible service Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
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Abstract
The invention discloses a cluster framework capable of realizing cloud computing flexible service. The cluster framework comprises a service registering system, a configuration center, a load balancer and a management system. The service registering system is used for registering service information; the configuration center collects the service information and resources and stores the service information and resources, and carries out dynamic update through monitoring service running state and expected state; the management system obtains the service information and resources from the configuration center, establishes a resource-service data table, and obtains the running state of the current service from the configuration center regularly; and the load balancer realizes load balance of the service according to the resource-service data table. Through the mode above, the cluster framework can integrate components with different functions, and realizes service discovery and optimal resource utilization and load balance of the service.
Description
Technical field
The present invention relates to field of cloud computer technology, especially relate to a kind of aggregated structure realizing the service of cloud computing elasticity.
Background technology
Server cluster just refers to a lot of server centered to get up and carries out same service together, similarly is only have a server in client.Cluster can utilize multiple computer to carry out parallel computation thus obtain very high computational speed, also can backup with multiple computer, thus makes any one machine break whole system still normally to run.
For the management meeting server resource creates many cloud computing platform class software, but these software majorities are absorbed in the problem solving a part, rarely have and hold proposition standard to the entirety of whole group system O&M, make the deployment of cloud computing cluster complicated.
Summary of the invention
Technical problem to be solved by this invention is: integrate different assembly, and each large functional unit feature of maximum using, realizes resource consolidation, facilitate cluster management.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: provide a kind of aggregated structure realizing the service of cloud computing elasticity, comprising: service registry system, configuration center, load equalizer administrating system; Wherein,
Service registry system is used for registration service information;
Configuration center gathers described information on services and resource, and stores; And dynamically updated by the running status of monitor service and expectation state;
Management system obtains described information on services and resource from configuration center, sets up resource-service data table, and regularly obtains the situation of current service operation from configuration center;
Load equalizer, according to described resource-service data table, by predetermined mode, realizes the load balancing to service.
Beneficial effect of the present invention is: be different from prior art, and the present invention, by integrating the assembly of difference in functionality, realizes service discovery, resources optimization utilizes, and can realize dynamic monitoring, and realize the dynamic load leveling to service.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of present system embodiment one;
Fig. 2 is the structured flowchart of present system embodiment two;
Fig. 3 be the specific embodiment of the invention realize one of Organization Chart.
Embodiment
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with execution mode.
Please refer to Fig. 1, the embodiment of the present invention one provides a kind of aggregated structure 100 realizing the service of cloud computing elasticity, comprising: service registry system 110, configuration center 120, load equalizer 130 administrating system 140; Wherein,
Service registry system 110 is for registration service information;
Configuration center 120 gathers described information on services and resource, and stores; And dynamically updated by the running status of monitor service and expectation state;
Management system 140 obtains described information on services and resource from configuration center 120, sets up resource-service data table, and regularly obtains the situation of current service operation from service registry system 110;
Load equalizer 130, according to described resource-service data table, by predetermined mode, as DNS mode, realizes the load balancing to service.
Be different from prior art, the embodiment of the present invention one, by integrating the assembly of difference in functionality, realizes service discovery, resources optimization utilizes, and can realize dynamic monitoring, and the dynamic load leveling to service.
Particularly, the aggregated structure in the embodiment of the present invention two also comprises: operational system 150; Wherein, described configuration center 120 is by information on services described in management system 140 periodic collection, and the API calling operational system 150 realizes the increase of service node, deletion and shut-down operation.
Wherein, described service registry system 110, configuration center 120, load equalizer 130, management system 140 and operational system 150 realizes combination by the HTTP API of standard, and described aggregated structure is loose coupling framework.
Wherein, described configuration center 120 is wherein a kind of in relevant database and cluster, distributed cache system and distributed NoSQL database.
Wherein, described information on services is computational resource information, comprises computational resource IP, port, priority, weight, domain name, health detection mode.
Wherein, described service registry system 110.
When service starts to perform, call service registry system registry service state;
In service execution process, dynamically update operational factor;
After service execution terminates, nullify service.
Wherein, address of service regularly in configuration center registration service information, and after the registration completing information on services, is supplied to client-side program by predetermined mode by wherein service registry system 110.
Wherein, described load equalizer 130, by weight and the priority of the pre-assigned service of service registry system 110, by the mode of DNS, carries out dynamic publishing to the domain name of service, realizes the load balancing of service call.
Wherein, according to described resource-service data table, described management system 140 contrasts current service ruuning situation and perfect condition, and Analysis Service running status, the resource that discovery can not be served, and call operational system 150 and start new resource, substitute the resource that can not serve.
Wherein, according to described resource-service data table, described management system 140 provides the ability of service to assess to it, disposes new Service Source, and/or reclaims Service Source.
In a specific embodiment, the present invention is based on the theory of service-oriented framework (SOA), wherein, SOA can carry out distributed deployment, combination and use by network to loosely-coupled coarseness application component according to demand.Service layer is the basis of SOA, can directly be employed to call, thus artificial dependence mutual with ageng in effective control system.
SOA is a kind of coarseness, loose coupling service architecture, carries out communication, do not relate to programming on bottom layer interface and Communication Model between service by simple, explication interface.SOA can be regarded as B/S model, XML (subset of standard generalized markup language)/Web Service technology after naturally extend.
SOA helper applications engineers can stand in exploitation, the deployment form that a new height understands the various assemblies in enterprise-level framework, it by help Enterprise Systems Architecture person with more rapidly, more reliable, have more the whole operation system of reusability framework.As compared with the past, can more at leisure in the face of the sharply change of business with the system of SOA framework.
The embodiment of the present invention is by integration management following function system:
As service registry agency, configuration center, load equalizer, cluster management system, cluster operational system etc., the cloud computing elasticity service cluster framework of a set of High Availabitity, dynamic elasticity, O&M close friend can be realized.By single data center's (i.e. configuration center) storing service information, by cluster management system periodic collection data, running status and the expectation state of contrast service make a policy, the operations such as the increase of service node, deletion and stopping are realized by calling operational system API, service discovery is realized with this, load balancing, fault restoration, make cluster High Availabitity, namely provides the service of elastic telescopic High Availabitity.
Should be understood that, in the embodiment of the present invention, cluster management system belongs to management system, and management system can have many different functions, but each function may have been gone by independent program, but is all attributed to management system, facilitates abstract representations.Management system and load balancing are separated, although load balancing also belongs to a kind of management, its function ratio is comparatively clear and definite, and running status is also real-time, and management system can periodically perform.And elastic telescopic depends on management system to the inspection of cluster state and recovery.
Preferably, aggregated structure of the present invention is load balancing framework, for the arbitrary portion assembly in this framework, reaching the effect of this framework compatible after all can using the functional interface of the assembly of identity function by realization correspondence, is loose coupling between functional unit.
Load balancing (Load Balance) is based upon on existing network infrastructure, it provides the bandwidth of the effectively transparent method extended network equipment of a kind of cheapness and server, increase throughput, Strengthens network data-handling capacity, the flexibility improving network and availability.Load balancing forms a server set in a symmetrical manner by multiple servers, and every station server all has status of equal value, externally can provide separately service and need not other servers auxiliary.By certain load balancing technology, the request of being sent outside is evenly distributed on a certain station server in symmetrical structure, and the server receiving request responds the request of client independently.Equally loaded mean allocation client can ask server array, takes this to provide quick obtaining significant data, solves a large amount of Concurrency Access service problem.This clustering technique can obtain close to the performance of mainframe with minimum investment.In brief, share exactly on multiple operating unit and perform, such as Web server, ftp server, enterprise crucial application server and other mission critical server etc., thus task of jointly finishing the work.
Aggregated structure of the present invention has high availability simultaneously.High-availability cluster is by the server cluster technology reduced for the purpose of out of service time.It is by the service that externally uninterruptedly provides of business procedure of protection user, being that the impact of fault on business caused is reduced to minimum degree because of software/hardware/people.
Node in high availability cluster is generally that a master one is standby, or one is main how standby, improves whole system availability by backup.
Load balancing cluster is generally lead more, each node load traffic.Therefore the aggregated structure in the embodiment of the present invention is how main how standby, as shown in Figure 3.Fig. 3 is a kind of implementation schematic diagram of aggregated structure, for using DNS service as the aggregated structure of load balancing module; Should be understood that, the load equalizer of this figure it is emphasised that instrument aspect, for separating of the software of flow, as Ngnix, HAProxy etc.Instead of the load equalizer of functional plane.
High-availability cluster (High Availability Cluster is called for short HA Cluster), briefly, cluster (cluster) is exactly one group of computer, and they integrally provide a group network resource to user.These single computer systems are exactly the node (node) of cluster.High availability cluster (HA cluster) refers to and to run as single system and to support that (computer) continues normal main frame group run.
Meanwhile, the service registry system of the embodiment of the present invention adopts divide and rule logon mode unified management, centralized dispatching, can realize High Availabitity, dynamic elasticity, O&M are friendly.
For realizing the dynamic management of service cluster, realization of the present invention is by using a series of assembly with specific function, the a set of computing cluster providing elasticity to serve be made up of these assemblies, and realize each assembly flexible combination by the HTTP API realizing standard, break away from the dependence to concrete assembly, greatly enhance the extensibility (i.e. loose coupling framework) of the program.
Particularly, the aggregated structure in the embodiment of the present invention comprises following several large function: the parts such as service registry, service discovery, load balancing, elastic telescopic, serve resources management.As shown in Figure 3, existing according to this framework bottom-up introduce each level component realization and it is with the mode that is mutually related of other assemblies.
For cloud computation data center, core resource is the computing capability of server, and computing capability is abstracted into the core number, memory size, disk size etc. that numeral is exactly CPU.When needs carry out unified management to resource, and resource needs to operate on operating system, in the prior art, there is following several implementation: the process directly run on an operating system, run virtual machine on an operating system, each independent virtual machine runs some processes, container technique, as Docker, or other container technique.For these three kinds of forms, wherein a kind of granularity as resource management can be selected, transform to meet the management of management system to resource to the API of the operational system that it comes out simultaneously, as the management for the process directly run on an operating system, the API of SaltStack can be used, carry out the operations such as the distribution of process, deployment, execution and stopping.Then management system United Dispatching is given by these API of SaltStack.As adopted the form of other resource managements, the API of the distribution of applying if can realize, deployment, execution and shut-down operation, just can be seamless include in whole framework.
The health information of configuration center collection service of the present invention and the Resources list information, configuration center can adopt relevant database and cluster, distributed cache system, distributed NoSQL database.
Define the resource information needing to include in configuration center, as resource IP, port, priority, weight, domain name, health detection mode etc., wherein, priority and weight are when service registry, define or obtained by certain formula by user.If serve self service that is attainable or that can transform, the api function of configuration center can be used, nullify in service, implementation when registration service state, end of run when service starts to perform and dynamically update operational factor; For revising source code and other are not easy to use the service of configuration center API, above service registry behavior can be completed by the service registry system realized, be responsible for monitor service running status by service registry system, regularly after the registration completing information on services, by certain way, address of service be supplied to client-side program in configuration center registration service information.The registration process of service is exactly by the API of the configuration center process toward configuration center write service operation state.
After completing service registry, service call person can obtain the information of service by certain mode, and the person that realizes service call is to the discovery of ISP.Wherein, namely service call person uses the client-side program of service, is the user of cluster service, uses the service that cluster provides; ISP is the program example in cluster, each equipment run, and externally provides service.The load balancing of serving can be realized herein, another load balancing needs an independent load balancing layer, can realize the service of DNS Protocol or other forms of load mechanism, but in essence, the data of load balancing layer all derive from the service state of configuration center record.Because a service can be provided by multiple computational resource, a server can dispose multiple same services, performance and the ability of each server are not quite similar, by configure weights and priority, WRR is set at DNS end and just can realizes carrying out dynamic assignment to service with adjustment service priority.
Because each application needs to distribute different services, each developer may manage different application simultaneously, service management system manages the tables of data of a resource perfect condition, this table record corresponding situation of user-application-resource, service manager, the service scenario of current operation is regularly obtained from configuration center, by contrasting current practical operation situation and perfect condition, Analysis Service running status, find which resource cannot be served, starting new resource for what cannot serve by calling operational system API, substituting the resource that can not serve; Also the ability of service can be provided to assess to it, for the service that load pressure is large, dispose new Service Source, hoisting power; For the service that load is less, reclaim Service Source, save computational resource (this process can call special cluster management system to be increased by the program opened and closed on particular server and reclaimed computational resource).
Resource mainly refers to some system parameterss of computer, is the abstract expression of computing capability.But in any system level of height, resource also may refer to the active program of occupying system resources.Computational resource can be physical host, virtual machine or a container.Compute resource deployment service registry agency, be responsible for monitor service running status, expose the address of service, regularly in configuration center registration service information.Or in the program code that service is provided, use the API Active Registration service of registration service, and large or when rolling off the production line at service load pressure, from configuration center amendment information on services.
Service mainly refers to the operation aspect of computational resource, is expressed as the program in the computer run providing input-output to feed back for other programs.
By the data at acquisition configuration center, obtain the ruuning situation of whole cluster, conveniently service monitoring is carried out to cluster, the information on services corresponding to application is shown on door, facilitates developer to understand its service operation state.
In sum, aggregated structure provided by the invention, by integrating above-mentioned 5 assemblies, registration service, and realize service among multiple servers by load equalizer, management system and operational system are by the service state in configuration center and information on services simultaneously, optionally perform the increase of service node, deletion and shut-down operation, to guarantee the load balancing of serving.Be combined as loose coupling simultaneously between assembly, can be in practice, the effect of aggregated structure is realized by the assembly changing identity function, therefore possess high availability, elastic telescopic is large simultaneously, is applicable to the process enterprise of bulk information or the industry of other related services, and after above-mentioned 5 assemblies of integration, service discovery can be realized, resources optimization utilizes, and can dynamic monitoring be realized, and the dynamic load leveling to service.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing specification of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. realize an aggregated structure for cloud computing elasticity service, it is characterized in that, comprising: service registry system, configuration center, load equalizer administrating system; Wherein,
Service registry system is used for registration service information;
Configuration center gathers described information on services and resource, and stores; And dynamically updated by the running status of monitor service and expectation state;
Management system obtains described information on services and resource from configuration center, sets up resource-service data table, and regularly obtains the situation of current service operation from service registry system;
Load equalizer, according to described resource-service data table, realizes the load balancing to service.
2. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, is characterized in that, also comprise: operational system; Wherein, described configuration center by information on services described in management system periodic collection, and calls operational system API and realizes the increase of service node, deletion and shut-down operation.
3. the aggregated structure realizing the service of cloud computing elasticity according to claim 2, it is characterized in that, described service registry system, configuration center, load equalizer, management system and operational system realize combination by the HTTP API of standard, and described aggregated structure is loose coupling framework.
4. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, is characterized in that, described configuration center is wherein a kind of in relevant database and cluster, distributed cache system and distributed NoSQL database.
5. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, it is characterized in that, described information on services is resource information, comprises resource IP, port, priority, weight, domain name, health detection mode.
6. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, is characterized in that, described service registry system,
When service starts to perform, call service registry system registry service state;
In service execution process, dynamically update operational factor;
After service execution terminates, nullify service.
7. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, it is characterized in that, wherein service registry system at regular intervals is in configuration center registration service information, and after the registration completing information on services, by predetermined mode, address of service is supplied to client-side program.
8. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, it is characterized in that, described load equalizer passes through weight and the priority of the pre-assigned service of service registry system, by the mode of DNS, dynamic publishing is carried out to the domain name of service, realizes the load balancing of service call.
9. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, it is characterized in that, according to described resource-service data table, described management system contrast current service ruuning situation and perfect condition, and Analysis Service running status, the resource that discovery can not be served, and call operational system and start new resource, substitute the resource that can not serve.
10. the aggregated structure realizing the service of cloud computing elasticity according to claim 1, it is characterized in that, according to described resource-service data table, described management system provides the ability of service to assess to it, dispose new Service Source, and/or reclaim Service Source.
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